<template>
    <div class="wrapper">
        <div style="margin:200px auto; background-color:#fff;width:350px;height:300px;padding:20px; border-radius:10px">
            <div style=" margin:20px 0; text-align:center;font-size:24px"><b>登 录</b></div>
            <el-form :model="user" :rules="rules" ref="userForm"><!--通过ref可以获取到表单-->
                <el-form-item prop="username">
                    <el-input size="medium" style="margin:10px 0" prefix-icon="el-icon-user"
                              v-model="user.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input size="medium" style="margin:10px 0" prefix-icon="el-icon-lock"
                              show-password v-model="user.password"></el-input>
                </el-form-item>
                <el-form-item style="margin:10px 0; text-align:center">
                    <el-button type="primary" size="small" autocomplete="off" @click="login">登录</el-button>
                    <el-button type="warning" size="small" autocomplete="off" @click="$router.push('register')">注册</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
    import {setRoutes} from "../router";

    export default {
        name: "Login",
        data() {
            return {
                user: {},
                rules: {
                    username: [
                        {required: true, message: '请输入用户名', trigger: 'blur'},
                        {min: 3, max: 7, message: '长度在 3 到 7 个字符', trigger: 'blur'}
                    ],
                    password: [
                        {required: true, message: '请输入密码', trigger: 'blur'},
                        {min: 3, max: 7, message: '长度在 3 到 7 个字符', trigger: 'blur'}
                    ]
                }
            }
        },
        methods: {
            login() {
                this.$refs['userForm'].validate((valid) => {
                    if (valid) {//表单校验合法才发请求
                        this.request.post("/user/login", this.user).then(res => {
                            if (res.code == '200') {//res为空就弹出提示
                                //储存后端返回的数据
                                sessionStorage.setItem("user", JSON.stringify(res.data))
                                localStorage.setItem("user", JSON.stringify(res.data));//储存 用户信息到浏览器
                                localStorage.setItem("menus", JSON.stringify(res.data.menus));//储存用户信息到浏览器
                                //动态设置当前用户的路由
                                setRoutes();
                                this.$router.push("/");//跳到主页面
                                this.$message.success("登录成功")
                            } else {//res不为空就跳到主页面
                                // this.$message.error("用户名或者密码错误");
                                this.$message.error(res.msg)
                            }
                        })
                    }
                });

            },
        }
    }
</script>

<style scoped>
    .wrapper {
        height: 100vh;
        background-image: linear-gradient(to bottom right, #42b983, #eeeeee);
        overflow: hidden; /*超出部分隐藏*/
    }
</style>